/*
 * Bryan
 * Fitness Menu
 */


using System;
using System.Collections.Generic;

namespace bryan_FitnessMenu
{
    public class Order
    {
        public List<Drink> Drinks { get; set; } = new List<Drink>();
        public double TotalPrice { get; set; } = 0.00;
        public int NumberOfDrinks { get { return this.Drinks.Count; } }
        public string OrderNumber = Convert.ToBase64String(Guid.NewGuid().ToByteArray()).Substring(0, 8);

        /// <summary>
        /// Overrides the ToString and returns a receipt for the order
        /// </summary>
        /// <returns></returns>
        public override string ToString()
        {
            if (this.Drinks.Count <= 0) return "";

            string formatted = $"Order #: {OrderNumber}{Environment.NewLine}Number of Drinks: {this.NumberOfDrinks}{Environment.NewLine}---{Environment.NewLine}";

            // Add all the drinks
            foreach (Drink _drink in this.Drinks)
                formatted += _drink.ToString();

            // Update our price
            CalculatePrice();

            formatted += $"Order Total: {this.TotalPrice:c}";

            return formatted;
        }

        /// <summary>
        /// Updates the total price for this order.
        /// </summary>
        public void CalculatePrice()
        {
            // Reset the price
            this.TotalPrice = 0.00;

            // Don't process if we don't have any drinks
            if (this.Drinks.Count == 0) return;

            foreach (Drink _drink in this.Drinks)
                this.TotalPrice += _drink.Price;
        }
    }
}